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The shielding of electrons gives rise to an effective nuclear charge, Z eff which explains why boron is larger than oxygen. Estimate the approximate Z eff felt by a valence electron of boron and oxygen, respectively? Please explain (I don't want just the answer).
A. +5 and +8B. +3 and +6C. +5 and +6D. +3 and +8E. +1 and +4
Citric acid (H3C6H5O7) is a product of the fermentation of sucrose (C12H22O11) in air. C12H22O11(aq) + 3 O2(g) -> 2 H3C6H5O7(aq) + 3 H2O(l) Determine the mass of citric acid produced when 4.60 mol C12H22O11 is used.
Calculate the volume of 6 M NaOH required to react completely with the amount of methyl salicylate you used. How much of the 6 M NaOH that you used was in excess of the theoretical amount?
Methanol, CH3OH, a colorless, volatile liquid, was formerly known as wood alcohol. It boils at 65.0°C and has a heat of vaporization of 37.4 kJ/mol. What is its vapor pressure at 22.0°C
In this experiment we used ortho-vanillin and p-toluidine to form the imine. Why does the reaction mixture turn into a liquid when the ortho-vanillin and p-toluidine are initially mixed? What is the name or melting point of the product?
A 40-year-old manager, at a prominent legal firm in L.A., experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps
Plot boiling point (BP) (y-axis) versus molecular weight (MW) (x-axis) for the first four compounds listed in the table below. Why Water and Ethanol are not on a straight line like the other substances
Solutions of sodium thiosulfate are used to dissolve unexposed AgBr ( Ksp= 5.0E-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.00L of 0.500M Na2S2O3?
a) Gaseous Cl2 in the stratosphere to form gaseous Cl atoms. b) Gaseous CO reacts with gaseous H2 to form liquid methanol, CH3OH. c) Calcium phosphate precipitates upon mixing Ca(NO3)2(aq) and (NH4)3PO4(aq).
How many moles of air are present in the RV at 1.0 atm and 37oC? b) How many molecules of gas are present under these conditions
Check all of the statements that are true for SO2. The domain geometry is trigonal planar. The molecular geometry is bent. The bond angle is 90 degrees
Substances A2, B2, and C2 can act as oxidizing agents. Solution A2 is green, B2 is yellow, and C2 is red. In the reactions in which they participated they are reduced to A-, B-, and C- ion, all of which are colorless
Consider the following pair of nucleophiles in CH3OH. Which, a: F- or b: N3- is the better nucleophile. Consider the following pair of nucleophiles in CH3OH. Which, a: CH3S- or b: H2O is the better nucleophile
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